| Literature DB >> 11917035 |
Mathias Gruen1, Kathy Chang, Irina Serbanescu, David R Liu.
Abstract
Homing endonucleases are enzymes that catalyze the highly sequence-specific cleavage of DNA. We have developed an in vivo selection in Escherichia coli that links cell survival with homing endonuclease-mediated DNA cleavage activity and sequence specificity. Using this selection, wild-type and mutant variants of three homing endonucleases were characterized without requiring protein purification and in vitro analysis. This selection system may facilitate the study of sequence-specific DNA cleaving enzymes, and selections based on this work may enable the evolution of homing endonucleases with novel activities or specificities.Entities:
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Year: 2002 PMID: 11917035 PMCID: PMC101853 DOI: 10.1093/nar/30.7.e29
Source DB: PubMed Journal: Nucleic Acids Res ISSN: 0305-1048 Impact factor: 16.971